Steven T. Suess is a physicists with NASA's Marshall Space Flight Center and sn adjunct professor at the University of Alabama in Huntsville. He has studied the Sun and its influence on the solar system for almost his entire career.Bruce T. Tsurutani is a space plasma physicist at the Jet Propulsion Laboratory, Pasadena, California. His research covers studies of the Sun, interplanetary spacem and planetary magnetospheres, including plasma instabilities, wave-particle interactions, nonlinear waves, and aurora.